Concrete-mixer.



- W. Ei HASSAM.

CONCRETE MIXER. l APPLICATION FILED APR. 8, 1907.

Patented Feb. 9, 1909 I H Hli War/1e s c. W. MM

narran erratas Parana* onirica.:

WALTER E. HASSAM, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO HASSAM- AVING l COMPANY, OF WORCESTER, MASSACHUSETTS, -A CORPORATION OF MASSACHUSETTS.

CONCRETE-MIXER.

Appiieauoneieaapras,1907. SeriaNasGasQa To all whom it. may concern:

Be it known that I, WALTER E. HAssAM, a.citizen of the United States, residing at Vorcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Concrete-Mixer, of which the following is a specication.

This invention relates toa device for mixing concrete for use especially in road making. y

The principal objects of the invention are to rovide an improved construction of bla es for efficiently mixing 1the concrete and a simple and'convenientv means for mounting them on the shaft of the mixer; to improve and simplify thefconstruction of the mixing tank; to provide' a convenient lvehicle on which the mixing tank and motor or engine for operating it .may be mounted; and generally to improve and simplify the con struction of devices of this character.

Reference is to be had to the accompanyingdrawings in which- 1igure y1 is aside elevation of a preferred embodiment of the invention. side elevation of thek mixing tank on an enlarged scale Vshowing the mixing blades in dotted lines. Eig.I 3 is a plan of thefsame partly broken away. Fig. 4 is an end eleva p the mixing tank 15.

motor or engine.

tion, and Eig. 5 is a sectional view of a detail showing how the blades are mounted.

In order that the device may be readily movable as is necessary in road making, the invention 1s preferably embodied 1n a structure consisting of a vehicle body which has a raised portion 10 at the front and a depression portion 11 at the rear. This body may be made in any desired way but the portions 10 and 11 are referably integrally connectedj".and are-s own as consisting of pieces-.ojtjbent channel iron. On the raised portion is a platform 12 on which is supported an'engine or motor 13.

The depression portion of the body is provided with a platform 14 which carries From one end of this mixing'tank extends a bracket 16 which has a bearing for the end of the shaft 17 of the This shaft is provided with a clutch 18 of any desired construction and with a pinion 1.9 which meshes with/a gear 20 on the shaft 21 'which' passes throi E,n

specification of Lettersra'tene.

Fig. 2 1s a.

Patented Feb. e, 190e.

the-mixing tank. n will basement the tank provides a support for the end, of the sli-aft of the engine and that the engine is conveniently located in proper position for A driving the shaft of the mixing tank.

The shaft 2l is provided Witha square' portion 2 2'0'11 which are removably bolted twoy pairs of brackets 23. Each of these brackets llas a. rentrant angle 24 for receiving the shaft, one side of the angle being commensurate with the shaft and, the other side 26 being longer than the widthfof the shaft. The two brackets of each pair are applied to the shaft. as indicated in Fig. 5, with their sides or legs 23 overlapping and bolted in position. This construction is such that the brackets can be secured in place in a very simple and convenient manner and they all can be made from cast iron and cast from the same pattern. This is a very simplecon- ,struction and requires very little manipulation in setting up the parts and taking them to pieces. Each of the brackets is provided with a flat extension -27 projecting outwardly preferably in' the plane of the shaft. p

When the brackets of a pair are placed in position on the shaft as indicated in Fig. 5, the I two extensions 27 are preferably on opposite sides of the shaft and are shown as located in parallel planes. When these brackets are mounted on the shaft in sets of two, as is in.- dicated in the drawings, each extension 27 of one pair is locatedon the opposite side'of the shaft from the corresponding extension on the other pair and preferably directly opposite and parallel with it as indicated. These extensions are designed for securing the ends of blades 28. These mixing blades are formed of metal strips 'secured to the extensions 27 and extending acrossfrom one side of the tank to the other.

extension on one side and at one end of the shaft and the other end of the bladeto a corresponding extension at the other endof the Atank and on the opposite side of theshaft.

This location of the blades is secured by fixing one end to an particular location of their ends, it will be seen that the blades are twisted in such a manner that at their centers b they are in 'a plane at right-angles to the adjacent side of i i plished in a most simple and convenient the shaft and on an inclination with respect to the axis thereof; consequently while this part of the blade movesv against the material flat-Wise, it is inclined with respect to its direction of motion so as to displace the material longitudinally with respect to the tank.'

This action insures the circulation of the Inaterial and makes it come into contact with the various parts of the blades.

- to this, it will be observed that those parts c of the blades which are between the centers and ends are inclined with respect to their direction of travel so that they meet the material with a cutting action. They also artake of the shape at the center of the bla e so that they assist at this point in transferring the material longitudinally of the tank. It will be seen, therefore, that these blades act to mix the material by the flat-wise movement of their ends and that they cut the material by the motion of their curvedportions a while the portions b and c of the blades have a tendency to move the material longitudinally of the tank in addition to the other function of assisting in the mixing.

The blades are preferably spaced from the shaft on account of the location of the extensions 27 so that they operate along the semiportion 30 concentric with the shaft 31 and vertical sides and ends 32. It is o en at the extends top except for a screen 38 whic across it. At the discharge end, the tank is provided with an opening at the bottom to which is applied a nozzle 34 connected-with a hose 35 or the like for distributing the material in any desired way.

The opening through the nozzle is controlled by a sliding gate or valve 36 which A has an opening 37 and which is operated by a lever 38. A spring 39 is located in position for engaging the lever to hold it. The tank is also provided with an outlet 40 having a valve 41 through which the interior may be cleaned out.

- It will be seen that by this construction, the device is admirably adapted for the work of mixing concrete, that the power is applied to the mixing device in a simple and convenient way, the whole mechanism bein mounted compactly on a vehicle which can e taken from place to place and the In addition other pair, whereby contents of the .tank can be distributed through reasonably wide limits by means of the hose. Moreover, the application of the mixing blades'to the square shaft is accom- While I have illustrated a particular form of the invention, I am aware that many modifications may be made therein without departing from the spirit of the same as expressed in the claims. Therefore, I do not wish vto be limited to the particular form shown, but J WhatI do claim is Y 1. The combination with a vehicle body having a raised portion in front and a depressed portion m the rear integrally connected together, a platform on the raised portion anda platform on the rear portion, of an engine or motor supported on the upper platform having a driving shaft, a mixin tank supported on the lower latform an having a shaft, a bracket on t e top of 4one end of the mixing tank supporting the end of the engine shaft, and means or transymitting power from one shaft to`the other. Y

2, yIn a mixing device, the combination of a squareshaft, two pairs of parallel brackets removably bolted to the opposite ends thereof, each'bracket having a rentrant angle .whereby the brackets of each pair mai be clamped tothe square shaft, said brac 'ets .having flat .extensions projecting ono posite sides of the shaft and parallel With eac other, and two curved blades each one being secured to the flat extensions on a bracket of one pair and to the o posite bracket of the iboth blades are fixed with respect to eachother and'each extends through an angle of .substantially 180 degrecs.

3. A mixingdevice', comprising a'square shaft, a air of brackets secured thereto, each bracI-I side of which is su stantially of the same size as one side of the shaft, and the other side of which is longer than the side of the shaft whereby said brackets can be fitted together on the shaft, means for removably securing said brackets together and clamping them to the shaft, said brackets having projections extending therefrom in o posite directions but in planes parallel witlfl each other and with the side of the shaft on which said longer side of the rentrant angle is fixedJ and curved mixing blades removably secured to said extensions.

4. In a mixing device, the' combination of a shaft, two pairs of arallel brackets secured to -the opposite ens thereof, each bracket vhaving a rentrant depression whereby the et havin a rentrant angle'onev 912,125 e 'B v blades each one being secured to the extentending therefrom in opposite directions but sion on a bracket of one pair and'to the 0pin planes arallel with each other, and curved posite bracket of the other pair. mixing b ades removably secured to said ex- 5. A mixing device, comprising a shaft, a tensions. 5 air of brackets secured thereto, each bracket In testimony whereof I have hereunto set aving a rentrant angle one side of which my hand, in the presence of two subscribing is longer than the side of the shaft whereby Witnesses. said brackets can be fitted together on the 'WALTER E. HSSAM. shaft, means for removably securing said Witnesses: 10 `brackets to ether and clamping them to the SAMUEL E. HULL, shaft, said rackets having projections eX- THOMAS H. SULLIVAN.A 

